Strain insulator



Oct. 28 1924.

L. STEINBERGER STRAIN INSULATOR Original Fi led Nov.

Bil

Patented Get. 28, 1924.

UNITED STATES 1,513,2t 3 PATENT OFFICE.

LOUIS STEJN BERGE R, OF BROOKLYN, NEW YORK.

STRAIN INSULATOB.

Substitute and continuation of application Serial No. 264,147, filedNovember 26, 1918.

This application filed April 3, 1920. Serial No. 370,972.

To all w/iom it may concern:

Be it known that 1, Louis s'rnmnnnonn, a citizen of the United States,and a resident of the borough of Brooklyn, city and State of New York,have invented certain new and useful improvements in Strain insulators,of which the following is a specification.

My invention relates to strain insulators, one or the objects of whichis to provide an insulating body portion which is at all timesdetachable from the strain members of the insulator.

Another object is to so construct the strain insulator that the body ofinsulating material and the strain members may be rapidly and easilyassembled and disassembled.

Other objects will appear from the subjoineo specification and claims.

This application is filed as a substitute and continuation or myapplication Serial No. 264,147 filed November 26, 1918.

In the drawings in which the same reference character indicates the samepart in the several views:

l is a vertical section showing an insulator assembled embodying myinvention.

l ig. 2 is a side elevation of the same viewed in t re direction of thearrow in Fig. 1.

Fig. is a plan view or the insulator body, which body is similar inappearance viewed from either end.

The strain members A and A are duplicates of each other, as clearlyshown in the drawing, in which the bridge portions consist of rings 10and 10 connected respectively to the leg portions thereof. The leportions 12 and 1-3 of the strain member A and 12 and 13 of the strainmember A are connected respectively to the rings 10 and 10 by the elbows16, 17 and 16, 17. the elbows being connected to the rings at pointsdiametrically opposite each other, the re specti e leg portionsextending vertically laorefrom. Each of the strain members is made up oftwo parts, the parts and 31 ot' the respective strain members beingscrewthreaded at the ends of the respective leg portions. Likewise theother separable parts 30 and 81 of the respective strain iembers areyoke shape and are provided with projecting ends 3%, and 3e and 35 whichcoincide with the screwthreaded ends respectively of the leg portions 12and A3 and 12' and 18 so that the two portions 30 and 31 ant 30 and 31of the respective strain members are secured together by engaging thenuts or sleeves 40 and 4:1, 40 and 41.

In forming the body of insulating material I mold it into the shapeshown in the drawing, in which there are two circular recesses and 51one in each face thereby permitting the seating of the rings forming thebridge portions of the strain members. Extending vertically and radiallyfrom these circular recesses are grooves 52, 53, 5 k and for receivingthe elbow portions or the strain members, and grooves 60, 61, 62 and 63for receiving the leg portions of the strain members.

A- series of circular grooves and ridges 71 also are formed in the sideof the insulator member for the purpose of increasing the surface areathereof.

The grooves or corrugations above described, which are provided for thereception of portions of the strain members, may be either round, squareor other suitable shape to lit the particular shape of the strainmembers.

In the bottom of the grooves in which the ring portions or" the strainmembers are seated, I provide resilient or yielding washers and 81 so asto take up the mechanical strains and stresses which are imposed uponthe insulator body by the strain members.

In assembling the insulator the body B is fitted to one strain member sothat the projecting leg members are brought into line with theoppositely disposed grooves in the sides of the insulator body, and theinsulator body is thus permitted to seat itself upon the elbows and ringshaped portion of the strain member. The other strain memher is thenlowered into place by positioning the vertical legs thereof in the otherpair of vertical grooves in the sides of the insulator body ii, andlowered into position as will be clearly understood. The other separableportions of the strain members 30 and 31 are then placed in respectivepositions and secured to the projecting legs of the complementary strainmember by the respective sleeve nuts.

will be understood from the above description and illustration in thedrawing, the insulator body and the interlocked strain members may bevery quickly assembled or dissassembled, and new bodies of insulatingmaterialyn ay be substituted for the old ones very quickly and readily.I

The insulator may be made of any suitable 'moldable insulating materialsuch as that known in the art as electrose, or it may bemade ofporcelain, glass or other vitreous or fireproof insulating material.

As changes of construction could be made within the scope of myinvention, it is intended that all matter contained in the abovedescription or shown in the accompanying drawings shall be interpretedas illustrative and not in a limiting sense.

Having now described my invention, what I-cla'im as new and desire tosecure by Letters Patent is:

1. In a device of the kind described, a

body of insulating material provided with circular seats in the oppositefaces there of for the reception respectively of the bridge. portions ofstrain members and with vertically disposed grooves in the side toreceive the'leg portions of said strain members, said grooves extendingfrom end to end of the insulator bod said verticall disposed groovesbeing arranged inpairs, each pair being respectively connected. bygrooves to one of said oppositely disposed circular seats.

2. in a device of the kind described, a body of insuiating materialprovided with circular seats in the opposite faces thereof for thereception respectively of the bridge portions of strain members and withverticaily disposed grooves in the side to receive the leg portions ofsaid strain members, said vertically disposed grooves being arranged inpairs and extending from end to end of the insulator body, each pairbeing hand at the borough of Manhattan, city and State of New York, thissecond day of jioril, 1920. v

LOUIS STEINBERGER. in presence of IsAnnL R. FLETCHER.

